<template>
    <div class="top-right-btn" :style="style">
        <el-row>
            <el-tooltip v-if="search" class="item" effect="dark" :content="showSearch ? '隐藏搜索' : '显示搜索'"
                placement="top">
                <el-button circle icon="Search" @click="toggleSearch()" />
            </el-tooltip>
            <el-tooltip class="item" effect="dark" content="刷新" placement="top">
                <el-button circle icon="Refresh" @click="refresh()" />
            </el-tooltip>
            <el-tooltip v-if="columns" class="item" effect="dark" content="显隐列" placement="top">
                <el-button circle icon="Menu" @click="showColumn()" v-if="showColumnsType == 'transfer'" />
                <el-dropdown trigger="click" :hide-on-click="false" style="padding-left: 12px"
                    v-if="showColumnsType == 'checkbox'">
                    <el-button circle icon="Menu" />
                    <template #dropdown>
                        <el-dropdown-menu>
                            <template v-for="item in columns" :key="item.key">
                                <el-dropdown-item>
                                    <el-checkbox :checked="item.visible" @change="checkboxChange($event, item.label)"
                                        :label="item.label" />
                                </el-dropdown-item>
                            </template>
                        </el-dropdown-menu>
                    </template>
                </el-dropdown>
            </el-tooltip>
        </el-row>
        <el-dialog v-model="open" :title="title" append-to-body>
            <el-transfer v-model="value" :titles="['显示', '隐藏']" :data="columns" @change="dataChange"></el-transfer>
        </el-dialog>
    </div>
</template>

<script setup lang="ts">
import { ref, computed } from 'vue';

const props = defineProps({
    /* 是否显示检索条件 */
    showSearch: {
        type: Boolean,
        default: true,
    },
    /* 显隐列信息 */
    columns: {
        type: Array as () => Array<any>,
    },
    /* 是否显示检索图标 */
    search: {
        type: Boolean,
        default: true,
    },
    /* 显隐列类型（transfer穿梭框、checkbox复选框） */
    showColumnsType: {
        type: String,
        default: "checkbox",
    },
    /* 右外边距 */
    gutter: {
        type: Number,
        default: 10,
    },
});

const emits = defineEmits(['update:showSearch', 'queryTable']);

// 显隐数据
const value = ref<any[]>([]);
// 弹出层标题
const title = ref('显示/隐藏');
// 是否显示弹出层
const open = ref(false);

const style = computed(() => {
    const ret: any = {};
    if (props.gutter) {
        ret.marginRight = `${props.gutter / 2}px`;
    }
    return ret;
});

// 搜索
function toggleSearch() {
    emits('update:showSearch', !props.showSearch);
}

// 刷新
function refresh() {
    emits('queryTable');
}

// 右侧列表元素变化
function dataChange(data: any) {
    for (let item in props.columns) {
        const key = props.columns[item as any].key;
        // eslint-disable-next-line vue/no-mutating-props
        props.columns[item as any].visible = !data.includes(key);
    }
}

// 打开显隐列dialog
function showColumn() {
    open.value = true;
}

if (props.showColumnsType == 'transfer') {
    // 显隐列初始默认隐藏列
    for (let item in props.columns) {
        if (props.columns[item].visible === false) {
            value.value.push(parseInt(item));
        }
    }
}

// 勾选
function checkboxChange(event, label) {
    props.columns.filter(item => item.label == label)[0].visible = event;
}

</script>

<style lang="scss" scoped>
:deep(.el-transfer__button) {
    border-radius: 50%;
    display: block;
    margin-left: 0px;
}

:deep(.el-transfer__button:first-child) {
    margin-bottom: 10px;
}

:deep(.el-dropdown-menu__item) {
    line-height: 30px;
    padding: 0 17px;
}
</style>
